LAB 11 VOLUMETRIC ANALYSIS THE TITRATION OF ACIDS AND BASES 157 Section Date Name Lab Partner Oxalic acid = 10.0mL +25 ML +3 drops phenolphthalen DI H₂O VOLUMETRIC ANALYSIS REPORT 1. Preparation of a Standard Oxalic Acid Solution Weight of oxalic acid + beaker 8. Weight of beaker Omit 3.01 Weight of oxalic acid g. Calculate the number of moles of oxalic acid, showing how you made the calculation. no at moles=oros ing =30-01 0-0334 moler mas moles 90-03 Calculate the molarity of oxalic acid solution, showing how you made the calculation. 0-033 O-134 MH,C,O -25L m = mol 250 ML 2. Preparation of an NaOH Solution for Standardization Calculate the approximate molarity of your NaOH solution from the volumes of NaOH and water you used. Show how you made the calculation. m2 = ? Mb V2= 500 ml .24 M NaOH V! 20-nl m2= Mi.V 6620.0) 3. Standardization of the NaOH Solution soo 1 2 3 H,C,, buret, final reading omit omit H.CO, initial reading Omit Omit Volume of oxalic acid solution used 10.0mL 10.0mL NaOH buret, final reading 11.33 mb 10.50ml NaOH initial reading 0.0 mL o.0mL 11.38 mL 10:50 mL Volume of NaOH solution used CamScanner
Give the molarity of the NaOH solution for each titration. (Show your calculations for one of them.) omit M M Calculate your mean value for M. M NaOH Mean value = 4. Determination of Molecular Weight of Unknown Acid 1 2 3 Weight of solid unknown and paper Omit Omis Omit omit Weight of weighing paper Weight of solid unknown acid 10:29 0-30 25-90 mL 34-42 mL OmL 0-15 mL NaOH buret, final reading NaOH initial reading Volume of NaOH solution used Calculated molecular weight Show one calculation. Mean value = g/mole Acid I.D. Number CamScanner
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!